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[goose]

I've got an upstairs bathroom which I am going to put ply sheets on the floor to tile, should the loo be fixed to the floorboards then the ply fitted around or the loo/sink etc be removed and the ply laid then sink/loo fitted onto it?

2ndly this may seem a strange question -

I've got a shower tray to fit needs to sit on ply for a cement base for it (waste sitting under the floorboards) if I use a thiner ply for the shower tray than the rest of the floor so that the tray 'sits' in the floor slightly. is that practiable?

thanks

[TerryH]

I'd 'rough fit the wc pan, get a good idea of it's final position, then you will know where to fix a noggin across the joists to give a really good fix for the pan.
Fit the ply, fit the tiles and fix the pan on top of the whole thing, it looks so much neater.

Not exactly sure what the second part of the question is looking for.... sorry, can't help.
TH

[stevenc1603]

As terry has said, put the pan on top of the ply and floor finish as it looks much better.

With regards to the shower tray, when I did my en-suite I laid the shower tray direct onto the existing floor and just ply'd the rest of the floor.

Once you have finished the floor tiling run a bead of silicon to seal the edge of the tray to the edge of the tiling on the floor.

[goose]

thanks both :D

[plumbbob]

Mortar is really only required if the shower tray base is not totally flat. Check the bottom with a straight edge to make sure there is not a dome in the middle. If it is flat, then strictly speaking the mortar is not critical.

A problem with fitting the tray directly on the floor is how do you make any adjustments to ensure the tray is perfectly horizontal? The tray must be completely supported underneath.